I've always been a big fan of the Diner Dash series. It pretty much started the whole time management genre and it still managed to stay interesting after all this time. However, the Seasonal Snack Pack version is much too difficult. As a matter of fact, it's so difficult that I stopped playing around the third level. I keep going back to try to beat it but, no matter how hard I try, I just can't do it.
The main problem lies in the table organization, which you cannot change. You are given one or two four-seat tables and three or four two-seat tables. A majority of the customers that come in are four-person parties, which means you cannot seat them until one of the few four-seat tables opens up. Then the customers get pissed off having to wait. Since it takes so long to do the "Make the waiting customers happy" thing, there isn't really a way to keep them from walking off. Well, there is, but it's difficult. Either way, the level is still too hard for the game. I can't imagine what the higher levels are like.